In patients with cough variant asthma (CVA), chronic cough is the main (if not the sole) symptom present associated with airway hyperresponsiveness (1).
In these patients eosinophils in sputum, bronchoalveolar lavage (BAL) fluid, and in bronchial biopsy specimens is characteristic (3).
It is important to differentiate CVA from the so-called eosinophilic bronchitis (EB) (1)
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